/* roulang page: index */
@import url('/assets/css/vendor/1ecd1de215-css2.css');
    
    :root {
      --deep-blue: #0A0E17;
      --neon-green: #00E5A0;
      --dark-card: #141C2B;
      --bg-dark: #060910;
      --bg-section: #0D1320;
      --amber: #FFB800;
      --text-dim: #9BA5B7;
      --border-light: rgba(0, 229, 160, 0.08);
      --border-glow: rgba(0, 229, 160, 0.25);
      --radius-card: 12px;
      --radius-btn: 8px;
      --shadow-card: 0 4px 20px rgba(0,0,0,0.4);
      --shadow-glow: 0 12px 32px rgba(0, 229, 160, 0.12);
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
      background-color: var(--bg-dark);
      color: #E0E4EB;
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      scroll-behavior: smooth;
    }

    .font-mono-numbers {
      font-family: 'Inter', 'SF Mono', 'DIN', 'PingFang SC', monospace;
      font-weight: 600;
      letter-spacing: -0.02em;
    }

    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 2rem;
    }

    /* 导航 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background: rgba(6, 9, 16, 0.92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid transparent;
      background-image: linear-gradient(to right, var(--neon-green), transparent 80%);
      background-position: bottom;
      background-size: 100% 1px;
      background-repeat: no-repeat;
      z-index: 50;
      transition: all 0.3s ease;
    }

    .nav-link {
      color: #8A94A6;
      font-weight: 500;
      transition: color 0.2s, text-shadow 0.2s;
      position: relative;
      padding: 0.5rem 0;
    }

    .nav-link:hover {
      color: #FFFFFF;
    }

    .nav-link.active {
      color: var(--neon-green);
      text-shadow: 0 0 8px rgba(0, 229, 160, 0.6);
    }

    .nav-link.active::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--neon-green);
      box-shadow: 0 0 12px var(--neon-green);
    }

    .btn-primary {
      background: var(--neon-green);
      color: #0A0E17;
      font-weight: 700;
      border-radius: var(--radius-btn);
      padding: 0.7rem 1.8rem;
      transition: all 0.25s;
      box-shadow: 0 4px 12px rgba(0, 229, 160, 0.3);
      border: none;
      cursor: pointer;
    }

    .btn-primary:hover {
      background: #1AFFB8;
      box-shadow: 0 0 24px rgba(0, 229, 160, 0.5);
      transform: translateY(-1px);
    }

    .btn-outline {
      background: transparent;
      border: 1px solid var(--neon-green);
      color: var(--neon-green);
      font-weight: 600;
      border-radius: var(--radius-btn);
      padding: 0.7rem 1.8rem;
      transition: all 0.25s;
    }

    .btn-outline:hover {
      background: rgba(0, 229, 160, 0.08);
      border-color: #1AFFB8;
      color: #1AFFB8;
    }

    /* 汉堡菜单 */
    .hamburger-line {
      background: var(--neon-green);
      height: 2px;
      width: 24px;
      margin: 5px 0;
      transition: 0.3s;
    }

    /* Hero背景 */
    .hero-bg {
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      position: relative;
    }

    .hero-overlay {
      background: linear-gradient(135deg, rgba(6,9,16,0.92) 0%, rgba(10,14,23,0.78) 100%);
      position: absolute;
      inset: 0;
    }

    /* 板块标题装饰 */
    .section-title {
      font-size: 2.25rem;
      font-weight: 700;
      letter-spacing: -0.02em;
      margin-bottom: 2.5rem;
      position: relative;
      padding-left: 1.2rem;
    }

    .section-title::before {
      content: '';
      position: absolute;
      left: 0;
      top: 50%;
      transform: translateY(-50%);
      width: 4px;
      height: 2rem;
      background: var(--neon-green);
      box-shadow: 0 0 16px var(--neon-green);
      border-radius: 2px;
      animation: breathe 2s infinite alternate;
    }

    @keyframes breathe {
      0% { opacity: 0.7; box-shadow: 0 0 8px var(--neon-green); }
      100% { opacity: 1; box-shadow: 0 0 20px var(--neon-green); }
    }

    .card-service {
      background: var(--dark-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-card);
      padding: 2rem;
      transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
      box-shadow: var(--shadow-card);
    }

    .card-service:hover {
      border-color: var(--border-glow);
      transform: translateY(-6px);
      box-shadow: var(--shadow-glow);
    }

    .faq-item {
      background: var(--dark-card);
      border-radius: var(--radius-card);
      margin-bottom: 1rem;
      border-left: 3px solid transparent;
      transition: border-color 0.3s, background 0.3s;
    }

    .faq-item.active {
      border-left-color: var(--neon-green);
      background: #1a2235;
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease;
    }

    .faq-item.active .faq-answer {
      max-height: 300px;
    }

    .input-field {
      background: #141C2B;
      border: 1px solid #2A3344;
      border-radius: var(--radius-btn);
      padding: 0.9rem 1.2rem;
      color: white;
      transition: border 0.2s;
      width: 100%;
    }

    .input-field:focus {
      outline: none;
      border-color: var(--neon-green);
      box-shadow: 0 0 10px rgba(0, 229, 160, 0.3);
    }

    @media (max-width: 768px) {
      .container {
        padding: 0 1.5rem;
      }
      .section-title {
        font-size: 1.75rem;
      }
      .mobile-menu {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: rgba(6,9,16,0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 1.5rem;
      }
      .mobile-menu.open {
        display: flex;
      }
    }